JPH0137178Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in the mounting structure of an in-tank pump in a vehicle fuel tank.

An in-tank pump is a pump that pumps fuel oil supplied to a vehicle fuel tank to a vehicle engine, and is installed in the tank. In order to prevent the fuel oil from being sent to the engine by the pump even if the engine is tilted, a sub-tank is installed, and an in-tank pump is installed in the sub-tank. Conventionally, however, as shown in Fig. 5, a set plate c is oil-tightly attached to an opening b provided on the upper surface of the fuel tank a, and a bracket d fixed to the lower surface of the plate c is used to hold an engine inserted into the sub-tank e. Tank pump f is fixed, but if the gap L between the inner bottom surface of filter g, which forms the suction port of pump f, and sub-tank e is too large, pump suction will not be possible even though there is a large amount of fuel oil remaining. If it is too small, problems such as friction noise and rust will occur. In addition, opening b
It is often not possible to install the bracket in the center of the top surface due to considerations with other equipment, and for this reason, it may be necessary to bend the bracket d as shown in the diagram. It becomes difficult to insert the fuel tank into the fuel tank e, and since the fuel tank a is made of a pressed steel plate and then welded, there is a drawback that the gap L mentioned above varies. The object of the present invention is to eliminate the above-mentioned drawbacks of the conventional fuel tank by attaching the sub-tank and the in-tank pump to the inner surface of the set plate, and attaching the set plate from the underside of the fuel tank.

An embodiment of the present invention will be described.

FIG. 1 shows an embodiment of the present invention, in which an opening 2 is provided on the lower surface of the center of a fuel tank 1 to allow a set plate 4 to be installed in an oil-tight manner through a packing 3.

A sub-tank 5 to be inserted into the center of the fuel tank 1 is provided on the inner surface of the set plate 4, and an in-tank pump 7 is attached to the inner bottom surface of the sub-tank 5 by a low pump holder 6. Clearance La between the filter 8, which forms the suction port, and the inner bottom surface of the sub-tank 5 (see Figure 2)
keep constant. A main tube 10 connected by a rubber hose 9 is provided at the discharge port of the in-tank pump 7, and the tube 10 is bent downward to pass through the set plate 4 in an oil-tight manner, and a connector 12 is attached to the outside. The power supply line 11 is passed through the set plate 4 in an oil-tight manner and connected to the power supply terminal 13 of the in-tank pump 7.

The above-mentioned various parts attached to the set plate 4 are assembled together with the plate 4 to form one unit.

FIG. 3 shows an embodiment in which a horizontal type in-tank pump 7a is used and is installed in the sub-tank 5a, and since the other parts are the same as in FIG. 1, the same parts are given the same reference numerals as in FIG. 1.

FIG. 4 shows an embodiment in which the main tube 10a connected to the in-tank pump 7a of FIG. 3 is passed through the side of the sub-tank 5a in an oil-tight manner.

The present invention has the above-mentioned configuration, and the sub-tanks 5, 5
A is attached to the opening 2 on the lower side of the fuel tank 1 to a set plate 4 that is sealed from below, and the sub-tanks 5, 5a are fixed to the inner surface of the set plate 4, and the in-tank pump 7 is installed inside the sub-tanks 5, 5a. , 7a are fixed, even if there is some manufacturing error in the fuel tank 1, the gap La between the sub-tanks 5, 5a and the filter 8, which forms the suction port of the in-tank pumps 7, 7a, will remain as set. Furthermore, the set plate 4 is installed from below the opening 2 on the lower side of the fuel tank 1, so even if the fuel tank 1 cannot be installed in the center of the width of the vehicle, the opening can be fixed. 2 can be freely installed on the lower surface of the center of the vehicle width, so the unit body consisting of the set plate 4, sub-tanks 5, 5a, and in-tank pumps 7, 7a can be inserted into the inside of the fuel tank 1 through the opening on the lower surface. Therefore, it has the advantages of being extremely easy to install, being inexpensive and easy to manufacture, and reducing costs.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention, FIG. 1 is a longitudinal side view, FIG. 2 is an enlarged longitudinal side view of the same part, and FIGS. 3 and 4 show other embodiments. FIG. 3 is a partial vertical side view, and FIG. 4 is also a partial vertical side view. FIG. 5 shows a vertical side view of the conventional structure. 1...Fuel tank, 2...Opening, 4...
Set plate, 5, 5a...Sub tank, 7,
7a... In-tank pump, 8... Filter,
10,10a...Main tube.

Claims (1)

[Scope of utility model registration request] An opening 2 is provided in the center of the lower surface of the vehicle fuel tank 1 to attach a set plate 4 oil-tightly from below, and sub-tanks 5, 5a are inserted onto the set plate 4 into the center of the fuel tank 1;
The main tube 1 is equipped with in-tank pumps 7, 7a which are kept at a required minute distance within the sub-tank, and is connected to the discharge port of the in-tank pump.
1. A mounting structure for an in-tank pump in a vehicle fuel tank, characterized in that in-tank pumps 0 and 10a are drawn out from a set plate 4 of a fuel tank 1 in an oil-tight manner.